Fundamentals of Applied Kinesiology Flashcards
Kinematics
study of form, pattern or sequence of movement without regard to forces involved
kinetics
describes the effects of forces on the body
law of inertia
a body in rest/motion will stay in rest/motion unless an external force is acted against it
Law of acceleration
F=ma
law of reaction
every applied force is accompanied by an equal and opposite reaction
Four types of motion
rotary, translatory, curvilinear, and general plane of motion
rotary motion
object turning about fixed point (elbow-karate chop)
translatory motion
body segment is not tied down and all parts move in straight line at same speed (sliding arm out to grab a cup)
Curvilinear motion
similar to the path of ball thrown (combo of translatory and rotary)
general plane motion
simoultaneously linear and rotary (riding a bike, rotary motion in lower body, but whole body is moving linearly)
Motive vs Resistive force
Motive is force that speeds up and resistive slows down
isometric
muscle tension is created but there is no apparent length
what plane is flexion and extension
saggital
what plane is abduction adduction
frontal
what plane is internal and external rotation
transverse
Torque equation
FxFa(forceX length of lever arm)
three classes of levers
Wheel barrel, crow bar
agonist
prime mover, muscle that causes a desired motion
antagonist
muscle that opposes the action of the agonist
synergist
muscles that assists the agonist
closed chain movement
the end of chain is fixed (squat) and require more muscles than open
open chain movement
end of chain is free (seated leg extension)
Joint mobility
the range of uninhibited movement around a joint or body segment
joint stability
the ability to maintin or control joint movement
